//算术运算符
let y = 5,
	x;
x = ++y;

console.log(x, y);
x = y++;
console.log(x, y);
x = --y;

console.log(x, y);
x = y--;
console.log(x, y);
export { x };
// 关系运算符  ==  != > < >= <=
// 逻辑运算符 && || (前两个为短路运算符,只要符合条件就跳过不进行了) !
// 位运算符 & | ~ ^ << >> >>>
//赋值运算符 = += -+ *= /=
//三元运算符 test? exp1: exp2

//类型运算符 typeof instanceof
